My laptop started working slower after defragmentation.

[Andrey Savitskiy1]

I decided to scan my HDD for fragmented files. The results were.. 50% of the files were fragmented! I used an app called O&O Defrag. After an 1 hour long defragmentation, I restarted my laptop and instead of getting a boost in performance, my system started working extremely slow, slower than before. My CPU usage capped at 100%, but the drive seems to be working faster. Before, 100% of the drive speed was used, now it's around 20-50%. Though, the CPU usage is at 80% with browser running, while playing a video it's around 100%.I defragged my C: partition. The system was absolutely fresh. I

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